<template>
  <el-card>
    <template #header>
      <el-steps :active="activeStep" simple>
        <el-step
          :title="item.title"
          :icon="item.icon"
          v-for="(item, index) in steps"
          :key="index"
          @click.native="activeStep = index"
        ></el-step>
      </el-steps>
    </template>
    <el-form label-width="80px">
      <div v-show="activeStep === 0">
        <el-form-item label="课程名称">
          <el-input v-model="course.courseName"></el-input>
        </el-form-item>
        <el-form-item label="课程简介">
          <el-input v-model="course.brief"></el-input>
        </el-form-item>
        <el-form-item label="课程概述">
          <el-input
            style="margin-bottom: 10px"
            v-model="course.previewFirstField"
            type="textarea"
            placeholder="概述1"
          ></el-input>
          <el-input
            v-model="course.previewSecondField"
            type="textarea"
            placeholder="概述2"
          ></el-input>
        </el-form-item>
        <el-form-item label="讲师姓名">
          <el-input v-model="course.teacherDTO.teacherName"></el-input>
        </el-form-item>
        <el-form-item label="讲师简介">
          <el-input v-model="course.teacherDTO.description"></el-input>
        </el-form-item>
        <el-form-item label="课程排序">
          <el-input-number v-model="course.sortNum" label="描述文字"></el-input-number>
        </el-form-item>
      </div>
      <div v-show="activeStep === 1">
        <el-form-item label="课程封面">
          <!--
            upload 上传文件组件，它支持自动上传，你只需要把上传需要参数配置一下就可以了
            -->
          <!--
            1. 组件需要根据绑定的数据进行图片预览
            2. 组件需要把上传成功的图片地址同步到绑定的数据中
            v-model 的本质还是父子组件通信
              1. 它会给子组件传递一个名字叫 value 的数据（Props）
              2. 默认监听 input 事件，修改绑定的数据（自定义事件）
            -->
          <course-image v-model="course.courseListImg" :limit="5" />
        </el-form-item>
        <el-form-item label="介绍封面">
          <course-image :limit="5" v-model="course.courseImgUrl" />
        </el-form-item>
      </div>
      <div v-show="activeStep === 2">
        <el-form-item label="售卖价格">
          <el-input v-model.number="course.discounts" type="number">
            <template #append>元</template>
          </el-input>
        </el-form-item>
        <el-form-item label="商品原价">
          <el-input v-model.number="course.price" type="number">
            <template #append>元</template>
          </el-input>
        </el-form-item>
        <el-form-item label="销量">
          <el-input v-model.number="course.sales" type="number">
            <template #append>单</template>
          </el-input>
        </el-form-item>
        <el-form-item label="活动标签">
          <el-input v-model="course.discountsTag"></el-input>
        </el-form-item>
      </div>
      <div v-show="activeStep === 3">
        <el-form-item label="限时秒杀开关">
          <el-switch
            v-model="course.activityCourse"
            active-color="#13ce66"
            inactive-color="#ff4949"
          >
          </el-switch>
        </el-form-item>
        <template v-if="course.activityCourse">
          <el-form-item label="开始时间">
            <el-date-picker
              v-model="course.activityCourseDTO.beginTime"
              type="date"
              placeholder="选择日期时间"
              value-format="yyyy-MM-dd"
            />
          </el-form-item>
          <el-form-item label="结束时间">
            <el-date-picker
              v-model="course.activityCourseDTO.endTime"
              type="date"
              placeholder="选择日期时间"
              value-format="yyyy-MM-dd"
            />
          </el-form-item>
          <el-form-item label="秒杀价">
            <el-input v-model.number="course.activityCourseDTO.amount" type="number">
              <template #append>元</template>
            </el-input>
          </el-form-item>
          <el-form-item label="秒杀库存">
            <el-input v-model.number="course.activityCourseDTO.stock" type="number">
              <template #append>个</template>
            </el-input>
          </el-form-item>
        </template>
      </div>
      <div v-show="activeStep === 4">
        <el-form-item label="课程详情">
          <text-editor v-model="course.courseDescriptionMarkDown" />
          <!-- <el-input v-model="course.courseDescriptionMarkDown" type="textarea"></el-input> -->
        </el-form-item>
        <el-form-item label="是否发布">
          <el-switch
            v-model="course.status"
            :active-value="1"
            :inactive-value="0"
            active-color="#13ce66"
            inactive-color="#ff4949"
          />
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleSave">保存</el-button>
        </el-form-item>
      </div>
      <el-form-item v-if="activeStep >= 0 && activeStep < 4">
        <el-button @click="activeStep++">下一步</el-button>
      </el-form-item>
    </el-form>
  </el-card>
</template>

<script lang="ts">
import { defineComponent, ref } from 'vue'
import { saveOrUpdateCourse, getCourseById } from '/@/services/Course'
import CourseImage from './CourseImage.vue'
import TextEditor from '/@/components/TextEditor/index.vue'
import moment from 'dayjs'
import router from '/@/router'

export default defineComponent({
  name: 'CreateOrUpdateCourse',
  props: {
    isEdit: {
      type: Boolean,
      default: false
    },
    courseId: {
      type: [String, Number],
      default: ''
    }
  },
  components: {
    CourseImage,
    TextEditor
  },
  setup(props: any) {
    const activeStep = ref(0)
    const steps = ref([
      { title: '基本信息', icon: 'el-icon-edit' },
      { title: '课程封面', icon: 'el-icon-edit' },
      { title: '销售信息', icon: 'el-icon-edit' },
      { title: '秒杀活动', icon: 'el-icon-edit' },
      { title: '课程详情', icon: 'el-icon-edit' }
    ])
    const course = ref({
      // id: 0,
      courseName: '',
      brief: '',
      teacherDTO: {
        // id: 0,
        // courseId: 0,
        teacherName: '',
        teacherHeadPicUrl: '',
        position: '',
        description: ''
      },
      courseDescriptionMarkDown: '',
      price: 0,
      discounts: 0,
      priceTag: '',
      discountsTag: '',
      isNew: true,
      isNewDes: '',
      courseListImg: '',
      courseImgUrl: '',
      sortNum: 0,
      previewFirstField: '',
      previewSecondField: '',
      status: 0, // 0：未发布，1：已发布
      sales: 0,
      activityCourse: false, // 是否开启活动秒杀
      activityCourseDTO: {
        // id: 0,
        // courseId: 0,
        beginTime: '',
        endTime: '',
        amount: 0,
        stock: 0
      },
      autoOnlineTime: ''
    })
    const handleSave = ref(async () => {
      const { data } = await saveOrUpdateCourse(course.value)
      if (data.code === '000000') {
        router.back()
      }
    })
    const loadCourse = ref(async () => {
      const { data } = await getCourseById(props.courseId)
      const { activityCourseDTO } = data.data
      activityCourseDTO.beginTime = moment(activityCourseDTO.beginTime).format('YYYY-MM-DD')
      activityCourseDTO.endTime = moment(activityCourseDTO.endTime).format('YYYY-MM-DD')
      course.value = data.data
    })
    return {
      activeStep,
      steps,
      course,
      handleSave,
      loadCourse
    }
  },
  created() {
    if (this.isEdit) {
      this.loadCourse()
    }
  }
})
</script>

<style lang="scss" scoped>
.el-step {
  cursor: pointer;
}
</style>
